milter manager is a flexible and low administrative cost anti-spam system that can be used with MTAs that support milters like Sendmail and Postfix. It provides an effective solution by combining a range of existing milters.

ClamAV Unofficial Signatures Updater is a script that provides a simple way to download, test, and use third-party ClamAV signatures. It checks for updated unofficial clamav signature database files and can download them. It randomizes download time to help distribute the load more evenly for the database host mirror sites. Signature bypass entries can be created for temporarily resolving false-positive issues with third-party signatures. It can report which mirror site a download came from. It reports if a downloaded database is actually different than the running copy. Many other features are supported.

Using email storage in single folders makes it hard to train DSPAM. Sending email to the spam@mydomain.com alias works, but a more user-friendly system is needed. Additionally, since Mozilla Mail (Thunderbird) does a good job with 'Junk', it would be useful to process all user files for 'Junk' in their home directories. This small program grabs the DSPAM signatures of each email in the files provided and feeds them to DSPAM.

SMS Manager is a replacement for the default messaging application for the Android operating system. It features seperation between the inbox and outbox, a detailed folder view in the inbox (unread, read folders), a detailed folder view in the outbox (sent, draft, undelivered folders), and a spam filter for unwanted senders.

Rspamd is an anti-spam system designed to work faster than SpamAssassin by using the event model and various optimizations. Its most important features include regexp and Lua rules for filtering different parts of messages, a number of built-in functions for analyzing messages, fuzzy hash support, SURBL filters, email and character table support, a control interface for remote managing and stats gathering, a Lua plugin system, statistics support (OSB/Bayes), and an AJAX-based Web interface.

ExtraWatch is a real-time counter and live stats module for Joomla!, Wordpress, Drupal, Magento, and Prestashop. It allows you to view information about your visitors and bots in real-time from the administration back-end. It details IP addresses, countries of origin, geographical location, which pages they are viewing, and browser and operating system. It creates daily and all-time stats from these data plus unique, pageload, and total hits statistics. Furthermore, you can block harmful IP addresses, see blocked attempts, evaluate trend charts, and create goals based on many parameters. In the front-end, it displays top countries, and user and visit information for certain periods of time.

pgl4rbl implements a Postfix policy server that mixes two widely used techniques: greylisting and RBL (DNS blacklists). The idea is that greylisting is applied only to SMTP clients that match a RBL; this means that normal clients are not delayed (such as with a normal greylisting implementation), and RBL false positives do not cause problems (like when outright blocking them at the SMTP level).

Clement is an email server application. Its main function is to block unwanted mail (spam) as soon as possible in the email exchange process. It accepts or rejects email while the SMTP session, initiated by the email sender, is still pending, accepting legitimate email messages without the need to return an error status to non-existent or "borrowed" return address later. Clement can operate in two modes, either as a standard MTA (as sendmail, Postfix, Exim, Exchange, etc.) to store email in the recipient's own area, or to transmit the mail to an another SMTP server acting as smart spam filtering device. Each email domain name Clement knows about can be treated in one of these two modes depending on the group to which the domain name has been set. Each message is verified by a virus scanner (ClamAV) while the SMTP connection is still open, but the refusal of mail and the reason for refusal is notified to the actual sender. Mail management is done via a Web interface and can be delegated to three administrative levels (Root-Admin, Group-Admin, Domain-Admin). Standard users can access their own logs (sent email status, email rejected, quarantined email, etc.). With this interface, the user can handle the rejection and acceptance of mail. Users who are level "Admin" can access the session logs (via the Web interface). Clement uses a SQL database (PostgreSQL, MySQL) to store and manage logs, user profiles, and dynamic management of directives concerning the sender-receiver relationship.